Struct RateLimiter 

pub struct RateLimiter {
    pub limit: RateLimit,
    /* private fields */
}

Enforces a RateLimit by maintaining a ring vector of timestamps capped at the RateLimit::count.

Fields

limit: RateLimit

Implementations

impl RateLimiter

pub fn new(limit: RateLimit) -> RateLimiter

Create without preallocating storage. Ideal if it may go unused.

pub fn new_preallocated(limit: RateLimit) -> RateLimiter

Create with preallocated storage. Ideal if you’re likely to use it a lot to avoid resizing during fill.

pub fn check(&mut self) -> bool

Checks whether we’re able to perform the event at this time. On success, logs the current time to count towards future enforcement.

pub fn check_at(&mut self, instant: Instant) -> bool

Like RateLimiter::check, but you can provide an arbitrary timestamp (useful for tests!).

Warning: do not go backwards in time, things will mess up.

pub fn sweep(&mut self, instant: Instant) -> bool

Removes all readings before the period of our RateLimit, relative to the provided Instant.